i woke up this morning to find that my inc was pretty hot (left plugged in overnight to charge), and had not charged much (it only got to ~60% starting from 30ish). it also had the overheating warning blinking lights (alternate green and amber) going. i unplugged the phone and the blinking lights stopped and it cooled back down. when it was hot BatteryLeft was reporting 45C, right now it feels normal and reports 31.5C. should i be worried? all i did was plug it in and leave it on my desk like i normally do when charging, this is the first time it's ever done this for me.